return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2Cl (chloromethyl radical)

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
1 2 no C2V 2B1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-498.728589
Energy at 298.15K 
HF Energy-498.464519
Nuclear repulsion energy45.493708
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3294 3078 9.02      
2 A' 1506 1407 17.25      
3 A' 886 828 38.41      
4 A' 335 313 68.23      
5 A" 3448 3222 0.23      
6 A" 1057 988 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 5262.9 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 4917.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G**
ABC
9.26829 0.53002 0.50222

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 1.116 0.000
Cl2 -0.011 -0.583 0.000
H3 0.126 1.611 0.942
H4 0.126 1.611 -0.942

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69881.07321.0732
Cl21.69882.39172.3917
H31.07322.39171.8845
H41.07322.39171.8845

picture of chloromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.482 Br2 C1 H4 117.482
H3 C1 H4 122.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-498.728532
Energy at 298.15K 
HF Energy-498.464354
Nuclear repulsion energy45.529052
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3304 3088 7.25      
2 A1 1506 1407 17.89      
3 A1 890 831 36.74      
4 B1 242i 226i 81.54      
5 B2 3461 3234 0.02      
6 B2 1051 982 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 4985.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 4658.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G**
ABC
9.34828 0.53091 0.50238

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.113
Cl2 0.000 0.000 0.583
H3 0.000 0.946 -1.618
H4 0.000 -0.946 -1.618

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69641.07221.0722
Cl21.69642.39602.3960
H31.07222.39601.8917
H41.07222.39601.8917

picture of chloromethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 118.095 Br2 C1 H4 118.095
H3 C1 H4 123.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability